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This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The HTML <slot> element—part of the Web Components technology suite—is a placeholder inside a web component that you can fill with your own markup, which lets you create separate DOM trees and present them together.

Content categories Flow content, phrasing content
Permitted content Transparent
Events slotchange
Tag omission None, both the starting and ending tag are mandatory.
Permitted parents Any element that accepts phrasing content
Permitted ARIA roles None
DOM interface HTMLSlotElement

Attributes

This element includes the global attributes.

name
The slot's name.
A named slot is a <slot> element with a name attribute.

Examples

<template id="element-details-template">
  <style>
    details {font-family: "Open Sans Light", Helvetica, Arial, sans-serif }
    .name {font-weight: bold; color: #217ac0; font-size: 120% }
    h4 {
      margin: 10px 0 -8px 0;
      background: #217ac0; 
      color: white;
      padding: 2px 6px;
      border: 1px solid #cee9f9; 
      border-radius: 4px;
    }
    .attributes { margin-left: 22px; font-size: 90% }
    .attributes p { margin-left: 16px; font-style: italic }
  </style>
  <details>
    <summary>
      <code class="name">&lt;<slot name="element-name">NEED NAME</slot>&gt;</code>
      <i class="desc"><slot name="description">NEED DESCRIPTION</slot></i>
    </summary>
    <div class="attributes">
      <h4>Attributes</h4>
      <slot name="attributes"><p>None</p></slot>
    </div>
  </details>
  <hr>
</template>

Note: You can see this complete example in action at element-details (see it running live). In addition, you can find an explanation at Using templates and slots.

Specifications

Specification Status Comments
HTML Living Standard
The definition of '<slot>' in that specification.
Living Standard  
DOM
The definition of 'Slots' in that specification.
Living Standard  

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic supportChrome Full support 53Edge No support NoFirefox Full support 63
Full support 63
No support 59 — 65
Disabled
Disabled From version 59 until version 65 (exclusive): this feature is behind the dom.webcomponents.shadowdom.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
No support ? — 59
Disabled
Disabled Until version 59 (exclusive): this feature is behind the dom.webcomponents.enabled preference (needs to be set to true) and the dom.webcomponents.shadowdom.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
IE No support NoOpera Full support 40Safari Full support 10WebView Android Full support 53Chrome Android Full support 53Edge Mobile No support NoFirefox Android Full support 63
Full support 63
No support 59 — 65
Disabled
Disabled From version 59 until version 65 (exclusive): this feature is behind the dom.webcomponents.shadowdom.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
No support ? — 59
Disabled
Disabled Until version 59 (exclusive): this feature is behind the dom.webcomponents.enabled preference (needs to be set to true) and the dom.webcomponents.shadowdom.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
Opera Android Full support 40Safari iOS Full support 10.1Samsung Internet Android Full support 6.0
nameChrome Full support 53Edge No support NoFirefox Full support 63
Full support 63
No support 59 — 65
Disabled
Disabled From version 59 until version 65 (exclusive): this feature is behind the dom.webcomponents.shadowdom.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
No support ? — 59
Disabled
Disabled Until version 59 (exclusive): this feature is behind the dom.webcomponents.enabled preference (needs to be set to true) and the dom.webcomponents.shadowdom.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
IE No support NoOpera Full support 40Safari Full support 10WebView Android Full support 53Chrome Android Full support 53Edge Mobile No support NoFirefox Android Full support 63
Full support 63
No support 59 — 65
Disabled
Disabled From version 59 until version 65 (exclusive): this feature is behind the dom.webcomponents.shadowdom.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
No support ? — 59
Disabled
Disabled Until version 59 (exclusive): this feature is behind the dom.webcomponents.enabled preference (needs to be set to true) and the dom.webcomponents.shadowdom.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
Opera Android Full support 40Safari iOS Full support 10.1Samsung Internet Android Full support 6.0

Legend

Full support  
Full support
No support  
No support
User must explicitly enable this feature.
User must explicitly enable this feature.

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最近更新: mfuji09,